Water purification type unfired ceramsite and preparation method

A technology of ceramsite and water purification, applied in chemical instruments and methods, water/sewage treatment, adsorption water/sewage treatment, etc.

Inactive Publication Date: 2020-08-18
SHANXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method uses polymer materials as carriers, while graphene only has the functions of adsorption and oxidation, which is different from the material and mechanism of the patent of this application.

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  • Water purification type unfired ceramsite and preparation method

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Effect test

Embodiment 1

[0029] A preparation method of water-purifying type unfired ceramsite, comprising the following steps:

[0030] S1. Take 30 parts by weight of raw materials fly ash, 10 parts of starch, 10 parts of calcium oxide, 1 part of desulfurized gypsum, and 5 parts of sodium perborate and mix them evenly to obtain a mixture;

[0031] S2. Put the mixed material in S1 in a pan granulator, spray 30 parts by weight of water into the granulator at a flow rate of 1 part / minute to obtain ceramsite green balls; the water temperature is lower than 15 ℃; the rotating speed of the disc granulator is 20 rpm, and the inclination angle is 30 degrees;

[0032] S3, sieving the ceramsite green balls described in S2 to obtain ceramsite green balls with a particle size of 8-20 mm;

[0033] S4. Put the raw ceramsite balls described in S3 into a steam curing device for curing. The air humidity in the curing device should be greater than 70%. The curing temperature program is: curing at 40 degrees Celsius f...

Embodiment 2

[0043] A preparation method of water-purifying type unfired ceramsite, comprising the following steps:

[0044] S1, take by weight 75 parts of raw material fly ash, 35 parts of starch, 40 parts of calcium oxide, 2 parts of desulfurized gypsum, 20 parts of sodium perborate and mix evenly to obtain a mixture;

[0045] S2. Put the mixed material in S1 in a pan granulator, and spray 50 parts by weight of water into the granulator at a flow rate of 5 parts / minute to obtain ceramsite green balls; the water temperature is lower than 15 °C; the rotating speed of the disc granulator is 50 rpm, and the inclination angle is 50 degrees;

[0046] S3, sieving the ceramsite green balls described in S2 to obtain ceramsite green balls with a particle size of 8-20 mm;

[0047] S4. Put the raw ceramsite balls described in S3 in a steam curing device for curing. The air humidity in the curing device should be greater than 70%. The curing temperature program is: curing at 70 degrees Celsius for 0...

Embodiment 3

[0057] A preparation method of water-purifying type unfired ceramsite, comprising the following steps:

[0058] S1, take by weight 50 parts of raw material fly ash, 20 parts of starch, 20 parts of calcium oxide, 1 part of desulfurized gypsum, 18 parts of sodium perborate and mix evenly to obtain a mixture;

[0059] S2. Put the mixed material in S1 in a pan granulator, and spray 40 parts by weight of water into the granulator at a flow rate of 3 parts / minute to obtain ceramsite green balls; the water temperature is lower than 15 ℃; the rotating speed of the disc granulator is 30 rpm, and the inclination angle is 40 degrees;

[0060] S3, sieving the ceramsite green balls described in S2 to obtain ceramsite green balls with a particle size of 8-20 mm;

[0061] S4. Put the raw ceramsite balls described in S3 into a steam curing device for curing. The air humidity in the curing device should be greater than 70%. The curing temperature program is: curing at 50 degrees Celsius for 1...

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Abstract

The invention relates to the technical field of water purification, in particular to water purification type unfired ceramsite and a preparation method. The composite material is prepared by adding water into raw materials including fly ash, starch, calcium oxide, desulfurized gypsum and sodium perborate and granulating; meanwhile, the carbon-based catalyst and the metal oxide are loaded and embedded, the process is simple, high-temperature calcination is not needed in the preparation process, and energy conservation and environmental protection are achieved; pores can be formed in the ceramsite and in the surface of the ceramsite in a solid phase state in a unique efficient foaming process, so that the obtained ceramsite product has high porosity, water and fertilizer retention can be effectively realized, and the stacking density of the ceramsite is also reduced; in addition, residual sodium borate after decomposition of the foaming agent sodium perborate can be used as a plant to provide trace elements such as boron; therefore, the starch contained in the material can improve the microbial affinity of the material, and can also release a small amount of pores after being degraded in the environment, so that the porosity of the material is improved; the ceramsite is loaded and embedded with a carbon-based catalyst and a metal oxide, and has a purification function on urban surface runoff.

Description

technical field [0001] The invention relates to the technical field of water purification, and more specifically, relates to a water-purification type unfired ceramsite and a preparation method thereof. Background technique [0002] Ceramsite is rich in pores and has the effect of water and fertilizer retention; at the same time, it has a certain strength and adjustable particle size, and is an excellent horticultural cultivation substrate. However, most of the horticultural ceramsites currently on the market are sintered ceramsites, which need to be calcined at a temperature above 1000 degrees Celsius, which is costly and not energy-saving and environmentally friendly. Therefore, it is necessary to develop an unfired ceramsite prepared at a low temperature. [0003] The invention patent with the publication number CN102701785A discloses a preparation method of fly ash unfired ceramsite, which uses fly ash, cement, metal sulfide, etc. Burning ceramsite, but this method lac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B40/02C04B41/61C02F1/28
CPCC02F1/281C04B28/144C04B40/024C04B41/009C04B41/5001C04B41/61C04B24/38C04B22/0013C04B22/064C04B18/08C04B41/49C04B41/4537C04B41/0072
Inventor 张宁吴海滨宋慧平冯政君李剑锋程芳琴
Owner SHANXI UNIV
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